Australia is the only country in the world that has such stringent 'visual descent at night' rules
And Australia is the only country in the world that operates RPT passenger jets on regular services to airports that DON'T have radar or a tower control service. Thus the intense interest in making sure pilots have set procedures to ensure they stay clear of terrain. Perhaps these rules don't make much sense at AVV but there is a lot of other airports in oz that without very good local knowledge or an ATC unit to keep an eye on you, you will become a statistic real quick flying around Night VFR.